The Fifth Period
Modal Verbs
Teaching Aims:
ew the important usages of modal verbs.
up the different situations of modal verbs.
Teaching Important Point:
How to use modal verbs correctly.
Teaching Difficult Point:
How to choose modal verbs correctly.
Teaching Methods:
ew method to master the important usages of modal verbs.
ctive method and comparative method to master the important and difficult points.
Teaching Aids:
multimedia
blackboard
Teaching Procedures:
兂Step ⒐ Greetings
Greet the whole class as usual.
兂Step ⒑ Revision
T:In this Unit,we have done some practice about modal we know,modal verbs have several points in common which make them quite different from other ,please discuss the points in common among modal verbs in groups of r a while I will check your answers.
(Teacher gives students enough time to discuss,and then collects their answers and sums them up.)
Modal Verbs:
l verbs are used when we say that we expect things to happen or that things are possible,or necessary,or impossible,or improbable,or when we describe things that didnˇt happen,or that we are not sure whether they happened.
l verbs have no -s on the third person tions and negatives are made without ¨do〃.
l verbs have no infinitives.
l verbs have no past forms.¨Could〃 and ¨would〃 are used with past meanings in some cases.
l verbs can be used with perfect infinitive to talk about things which didnˇt happen,or which weˇre not sure about.
兂Step ⒒ Revision of the Important Usages of Modal Verbs
T:Good we all know,modal verbs can be classified into eight groups according to their y we will review some important usages of modal tly,letˇs review the modal verbs that can be used to express ¨possibility〃se tell me which modal verbs can be used to express ¨possibility〃.
Ss:Can/could/may/might all express ¨possibility〃.
T:When they express ¨possibility〃,they are not quite the same.¨Can〃 is used to talk about theoretical we want to talk about the actual chances of something happening,or being true,we use ¨could/may/might〃des,¨can〃 is sometimes used to talk about present ¨possibility〃,but only in questions and negative that clear?
Ss:Yes.
T:Now,letˇs do some exercises to master them at the screen and try to finish the sentences as soon as possible.
(Teacher uses multimedia to show the sentences on the screen.)
Fill in the blanks using can/could/may/might.
d you like to answer the phone?It ______ be your sister.
part of the country ______ be very warm in September.
3.______ it be Lily?
______(not) be true.
______ be right.
Suggested answers:
d/may/might ˇt
T:Besides ¨possibility〃,can/could/may/might are also used to express ¨permission〃?
Ss: we are not sure about how to use them.
T:It doesnˇt matter.I will give you some explanation.¨Can〃 is the commonest one of the four,and ¨could〃 is rather more hesitant than ¨can〃.¨May〃 and ¨might〃 are used in a more formal often suggest respect.¨Might〃 is more hesitant and is not very des,when we give permission,we usually use ¨can〃 and ¨may〃,but not ¨could〃 and ¨might〃 we report permission,¨may〃 is not usually you clear about it?
Ss:Yes.
T:Then try to finish the following exercises,please.
(Teacher shows the exercises on the screen.)
1.X______I use your phone?
XYes,of ______.
2.______ you come into the meeting room without showing a passport?
said that I ______ borrow her car.
Suggested answers:
;can/may
t/could]¨Might〃 and ¨could〃 can be used after a past verb.)
T:Next,which modal verbs do you think are necessary to review?
Ss:The modal verbs expressing ¨necessity〃 are very important.
T:Yes,I agree with can use ¨must/have to/have got to/need〃 to express ¨necessity〃 about how to use them,I want you to review them by understanding the following sentences by at the sentences on the screen.
(Teacher shows the sentences on the screen,and then asks some questions.)
1.I really must study hard.
must be here by 3 oˇclock.
have (got) to go and see the manager.
neednˇt work on Sundays.
T:From the sentences,who can tell me the difference between ¨must〃 and ¨have to〃?
S1:I want to have a ¨must〃 is used,the necessity comes from the the necessity comes from ¨outside〃,¨have (got) to〃 is more common.
T:Congratulations!Do you know how to use ¨need〃?
S2:I think in negative sentences,¨donˇt need to〃,¨neednˇt〃 or ¨donˇt have to〃 is used to say that there is ¨no necessity〃.
T:Please give me an ?
S2:I know the reason why you were neednˇt try to explain.
T:Thank addition,I want to tell you ¨have got to〃 is used instead of ¨have to〃 in informal that clear?
Ss:Yeah.
T:Now look at the blackboard.(Write the following on the blackboard.)
must have rained last night,for the ground is wet.
canˇt have seen him yesterday,for he is still in Australia.
could have told me he was coming.
is very may have missed the bus.
T:These sentences have something in can tell me what it is?
Ss:The modal verbs in these sentences are used together with perfect infinitives.
T:Very letˇs review the modal verbs used together with perfect infinitives.
S3:When should we use modal verbs together with perfect infinitives?
T:When we talk about the past,we can use the structure,but it has a special is used for speculating(thinking about what possibly happened) or guessing (thinking about how things could have been different) you got it?
Ss:k you.
T:Now letˇs do some exercises to consolidate the usage of the structure.
1.I told Sally how to get there,but perhaps I ______for her.
to write it out
be have written it out
ld have written it out
t to write it out
didnˇt let me we ______ in turn,you ______ so tired.
e;didnˇt get
e;wouldnˇt get
driving;wouldnˇt get
driven;wouldnˇt have got
want to know why she is late.
XShe ______ the early bus.
d miss
have missed
have missed
t miss
stayed at a hotel in New York.
XOh,did you?You ______ with Barbara.
d have stayed
d stay
d stay
have stayed
light is still ______ to turn it off when he ______ the room.
forget;leave
have forgotten;left
forget;have left
d have forget;left
(Teacher shows the exercises on the screen and gives students enough time to finish them,and then checks their answers and gives them some necessary explanation.)
Suggested answers:
1.C 2.D 3.C 4.A 5.B
T:Now,itˇs turn to review modal verbs expressing ¨advice〃ˇd like to tell me which modal verbs we can use to express ¨advice〃?
S4:I think we usually use ¨should/ought to/had better〃 to give ¨advice〃.
T: most cases,both ¨should〃 and ¨ought to〃 can be used with more or less the same ver,there is a very slight we use ¨should〃,we give our own subjective opinion.¨Ought to〃 had a rather more objective force,and is used when we are talking about laws,duties and you clear about that?
Ss:Yes.
T:Who wants to give us an example using ¨should〃 and ¨ought to〃 expressing ¨advice〃?
S5:People ought to vote even though they donˇt agree with any of the candidates.
T:Well about ¨should〃?
S6:Let me should see ¨Hero〃Xitˇs a great film.
T:Thank you for your good you know how to use ¨had better〃?
Ss: we use ¨had better〃,we donˇt usually mean that the action recommended would be better than another simply mean that he/she ought to do it.
T:Please make up a sentence using ¨had better〃.
S7:Youˇd better hurry up,if you want to get to the factory on time.
T:Good example!
兂Step ⒓ Summary and Homework
T:Up to now,we have reviewed modal verbs which express possibility,necessity,permission,advice and modal verbs used together with perfect are all very r class,try to do more exercises to master them ˇs all for you tomorrow.
Ss:See you tomorrow.
兂Step ⒔ The Design of the Writing on the Blackboard
Unit 13 The water planet
The Fifth Period
Modal Verbs
must have rained last night,for the ground is wet.
canˇt have seen her yesterday,for she is still in Australia.
could have told me he was coming.
is very may have missed the bus.
兂Step ⒕ Record after Teaching